[PATCH 3.8 03/91] ACPICA: Return error if DerefOf resolves to a null package element.
3.8.13.13 -stable review patch. If anyone has any objections, please let me
know.
--
From: Bob Moore
commit a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03 upstream.
Disallow the dereference of a reference (via index) to an uninitialized
package element. Provides compatibility with other ACPI
implementations. ACPICA BZ 1003.
References: https://bugs.acpica.org/show_bug.cgi?id=431
Signed-off-by: Bob Moore
Signed-off-by: Lv Zheng
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Kamal Mostafa
---
drivers/acpi/acpica/exoparg1.c | 13 ++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 1fa1ad6..c9f1a21 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -969,10 +969,17 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct
acpi_walk_state *walk_state)
*/
return_desc =
*(operand[0]->reference.where);
- if (return_desc) {
- acpi_ut_add_reference
- (return_desc);
+ if (!return_desc) {
+ /*
+* Element is NULL, do not
allow the dereference.
+* This provides compatibility
with other ACPI
+* implementations.
+*/
+ return_ACPI_STATUS
+
(AE_AML_UNINITIALIZED_ELEMENT);
}
+
+ acpi_ut_add_reference(return_desc);
break;
default:
--
1.8.1.2
--
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[PATCH 3.8 03/91] ACPICA: Return error if DerefOf resolves to a null package element.
3.8.13.13 -stable review patch. If anyone has any objections, please let me
know.
--
From: Bob Moore robert.mo...@intel.com
commit a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03 upstream.
Disallow the dereference of a reference (via index) to an uninitialized
package element. Provides compatibility with other ACPI
implementations. ACPICA BZ 1003.
References: https://bugs.acpica.org/show_bug.cgi?id=431
Signed-off-by: Bob Moore robert.mo...@intel.com
Signed-off-by: Lv Zheng lv.zh...@intel.com
Signed-off-by: Rafael J. Wysocki rafael.j.wyso...@intel.com
Signed-off-by: Kamal Mostafa ka...@canonical.com
---
drivers/acpi/acpica/exoparg1.c | 13 ++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 1fa1ad6..c9f1a21 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -969,10 +969,17 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct
acpi_walk_state *walk_state)
*/
return_desc =
*(operand[0]-reference.where);
- if (return_desc) {
- acpi_ut_add_reference
- (return_desc);
+ if (!return_desc) {
+ /*
+* Element is NULL, do not
allow the dereference.
+* This provides compatibility
with other ACPI
+* implementations.
+*/
+ return_ACPI_STATUS
+
(AE_AML_UNINITIALIZED_ELEMENT);
}
+
+ acpi_ut_add_reference(return_desc);
break;
default:
--
1.8.1.2
--
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Please read the FAQ at http://www.tux.org/lkml/
